CN101840101A - Display device with array type light-emitting component - Google Patents
Display device with array type light-emitting component Download PDFInfo
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- CN101840101A CN101840101A CN200910128985A CN200910128985A CN101840101A CN 101840101 A CN101840101 A CN 101840101A CN 200910128985 A CN200910128985 A CN 200910128985A CN 200910128985 A CN200910128985 A CN 200910128985A CN 101840101 A CN101840101 A CN 101840101A
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- luminescence unit
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Abstract
The invention relates to a display device with an array type light-emitting component. The display device has a plurality of pixels and comprises a backlight module, a liquid crystal module, a colored light filtering module and a control module, wherein the liquid crystal module is formed above the backlight module; the colored light filtering module is formed above the liquid crystal module; and the control module is used for controlling the backlight module and the liquid crystal module. The colored light filtering module comprises a plurality of light filtering blocks, wherein the plurality of light filtering blocks respectively correspond to the plurality of pixels of the display device, comprise at least one of first light filtering blocks for filtering the light ray expect the first light ray with the first light spectrum, and have no light filtering function in essence.
Description
Technical field
The present invention is about a kind of array light-emitting component and display device thereof.
Background technology
It is no longer out of reach that the appearance of blue light-emitting diode makes that LED source is applied to the target of lighting field.Lighting source is nothing more than white light source, and proven technique comprises with ruddiness, blue light, green light LED mixed light to form white light at present; Another mature technology comprises with blue light-emitting diode collocation yellow fluorescent powder colloid encapsulation formation white light.
Summary of the invention
The present invention proposes a kind of light emitting diode grain structure of novelty and display device to be widely used in various light source.
An aspect of of the present present invention provides one to have the display device of array light-emitting component.Described display device has a plurality of pixels, comprises that backlight module, Liquid Crystal Module are formed on the backlight module, the colorized optical filtering module is formed on the Liquid Crystal Module and control module, in order to control described backlight module and described Liquid Crystal Module.Described backlight module comprises light-emitting component in order to provide described display device required light source; Described colorized optical filtering module, comprise a plurality of pixels that a plurality of optical filtering blocks correspond respectively to described display device, and described a plurality of filter area certainly comprises one first optical filtering block at least in order to filter the light except first light with first spectrum, and the printing opacity block, do not have filtering functions in fact.According to one embodiment of the invention, described light-emitting component comprises first luminescence unit and sends that first light, second luminescence unit with first spectrum send second light with second spectrum that is different from first spectrum and the circuit linkage unit electrically connects first luminescence unit and second luminescence unit with type of attachment, make display device when power drives shows, first luminescence unit and second luminescence unit are lighted alternately according to predetermined clock pulse.
Description of drawings
Fig. 1 shows the LED crystal particle vertical view according to first embodiment of the invention;
Fig. 2 shows the LED crystal particle sectional structure chart according to first embodiment of the invention;
Fig. 3 shows according to formed light-emitting element circuit figure of first embodiment of the invention and clock pulse figure;
Fig. 4 shows the LED crystal particle sectional structure chart according to second embodiment of the invention;
Fig. 5 shows the LED crystal particle vertical view according to third embodiment of the invention;
Fig. 6 shows the embodiment according to display device of the present invention.
The main element symbol description
101,501: light-emitting component;
110,410,510,610: LED crystal particle;
111: the growth substrate;
112: the first contact layers;
113: luminescent layer;
1131: the first conductivity type bond courses;
1132: active layer;
1133: the second conductivity type bond courses;
114: the second contact layers;
115: the second electrodes;
116: the first electrodes;
117-1: first wavelength conversion layer;
117-2: second wavelength conversion layer;
117-3: three-wavelength conversion layer;
117-4: the 4th wavelength conversion layer;
118,518: conductive layer;
121: support substrate;
122: the reflection horizon;
123: on-monocrystalline engages layer;
320,520: the AC system power supply;
600: display device;
601: backlight module;
602: the first polarisation modules;
603: the film crystal tube module;
604: Liquid Crystal Module;
605: the second polarisation modules;
606: the colorized optical filtering module;
607: control module;
AA ': profile line;
B: blue optical filtering block;
C: printing opacity block;
R: red optical filtering block;
R1, R2, R3, R4: luminescence unit.
Embodiment
Fig. 1 discloses the vertical view of a LED crystal particle 110 according to the invention, comprises one 2 * 2 light emitting array.LED crystal particle 110 comprises luminescence unit R1, luminescence unit R2, luminescence unit R3 and luminescence unit R4 and is formed on the growth substrate 111 insulated from each otherly, and be electrically insulated with this growth substrate, a circuit layer 118 with a type of attachment make that luminescence unit R1～R4 electrically connects, wavelength conversion layer 117-1,117-2,117-3, and 117-4 corresponding respectively be formed at luminescence unit R1, R2, R3, and R4 on.Please also refer to Fig. 3, disclose the circuit diagram of Fig. 1, wherein, the type of attachment of circuit layer 118 makes luminescence unit R1 and R3 for being connected in series, luminescence unit R2 and R4 are for being connected in series, the luminescence unit R1 and the R3 of series connection then are connected for reverse parallel connection (anti-parallel) with the luminescence unit R2 and the R4 of series connection, and are connected to the two ends of a supply unit jointly, and described supply unit can be an AC system (Alternating Current; AC) power supply.
Fig. 2 is that Fig. 1 is according to the structural representation shown in the AA ' profile line, luminescence unit R1 and R3 are formed on the substrate jointly, and separate to be electrically insulated each other with irrigation canals and ditches, luminescence unit R1 and R3 respectively comprise one first contact layer, 112 epitaxial growths on growth substrate 111, one luminous lamination 113 is by first bond course 1131 (cladding layer) with first conductivity type, one active layer 1132 (activelayer), and one second bond course 1133 with second conductivity type in regular turn epitaxial growth on first contact layer 112, one second contact layer 114 is formed on second bond course 1133, one first electrode 116 is formed on first contact layer 112, one second electrode 115 is formed on first contact layer 114, and wavelength conversion layer 117-1 and wavelength conversion layer 117-3 are formed on second contact layer 114 of luminescence unit R1 and R3 accordingly.To second electrode 115 of luminescence unit R3, make luminescence unit R1 and R3 form and be connected in series on first electrode 116 of circuit layer 118 extension selfluminous cell R1.In the same manner, as shown in Figure 1, second electrode 115 of luminescence unit R2 is connected to first electrode 116 of luminescence unit R4 by circuit layer 118; And, second electrode 115 and first electrode 116 of luminescence unit R2 of luminescence unit R1 is connected to the positive pole of AC system power supply jointly by circuit layer 118, first electrode 116 of luminescence unit R3 and second electrode 115 of luminescence unit R4 are connected to the negative pole of AC system power supply jointly by circuit layer 118, to form the circuit structure of reverse parallel connection.In another embodiment of the present invention, LED crystal particle 110 also comprises an electric current dispersion layer (not illustrating) and is formed between second contact layer 114 and second electrode 115, so that electric current is scattered in LED crystal particle 110 surfaces, wherein, described electric current dispersion layer has the resistance value (resistivity) that is lower than second contact layer 114.
As shown in Figure 2, LED crystal particle 110 also comprises an insulation course 119 and is formed between circuit layer 118 and luminescence unit R1 and R3 sidewall and circuit layer 118 and the substrate 111 to prevent that luminescence unit R1 or R3 are because of circuit layer 118 phenomenon that is short-circuited.In the same manner, luminescence unit R1～R4 has similar structure, be that luminescence unit R1～R4 has identical luminous rhythmo structure, therefore can send light with same spectra, and the described wavelength conversion layer of formed thereon each can be different material for transformation of wave length, is converted to the light with different spectrum to make each described luminescence unit in response to demand by its corresponding wavelength conversion layer.In embodiments of the invention, wavelength conversion layer is that a stratiform structure is directly coated the surface of second contact layer 114 and is the part of LED crystal particle, and second electrode 115 protrudes in described wavelength conversion layer.Wavelength conversion layer 117-1,117-2,117-3, and 117-4 comprise at least a material and be selected from the material group that blue colour fluorescent powder, yellow fluorescent powder, green emitting phosphor, red fluorescence powder, zinc selenide, cadmium selenide zinc, III family phosphide, III family arsenide and III group-III nitride are formed.Described blue colour fluorescent powder refer to can will be incident to the light of fluorescent powder be converted to the fluorescent powder of blue light; Other such as yellow fluorescent powder, green emitting phosphor, and red fluorescence powder also have similar meaning.Each phosphor material powder and composition thereof belong to the prior art in this field, do not give unnecessary details at this.
As shown in Figure 3, light-emitting component 101 comprises as Fig. 1 or LED crystal particle 110 shown in Figure 2, and an AC system power supply is connected to LED crystal particle 110.Following table illustration luminescence unit R1～R4 and corresponding wavelength conversion layer 117-1,117-2 thereof, 117-3, and the combination of materials of 117-4, wherein, luminescence unit R1～R4 send wavelength coverage approximately the black light between about 410～430nm (near UV) or wavelength coverage approximately between the blue light of 440～480nm, and respectively through wavelength conversion layer 117-1,117-2,117-3, and 117-4 convert versicolor light to, form white light to mix.
The embodiment of [table one] each wavelength conversion layer material
As above Biao embodiment one, wavelength conversion layer 117-1,117-2,117-3, and the material of 117-4 comprise yellow, redness, blueness, green emitting phosphor respectively.In the forward semiperiod of AC power periodic wave, luminescence unit R1 and R3 are driven sends the approximately black light between about 410～430nm of wavelength coverage, respectively the wavelength conversion layer 117-1 through having yellow fluorescent powder and have the wavelength conversion layer 117-3 conversion of blue colour fluorescent powder after send wavelength coverage approximately between the gold-tinted of 570～595nm and wavelength coverage approximately between the blue light of 440～480nm; In the negative sense semiperiod of AC power periodic wave, luminescence unit R2 and R4 are driven the 425nm black light that sends, respectively wavelength conversion layer 117-2 through having red fluorescence powder and wavelength conversion layer 117-4 conversion with green emitting phosphor send wavelength coverage approximately between the ruddiness of 600～650nm and wavelength coverage approximately between the green glow of 500～560nm, and form white light with gold-tinted and blue light that the forward semiperiod is sent.In another embodiment of the present invention, described wavelength conversion layer also optionally only is formed on the luminescence unit R1～R4 of part, as the embodiment five of table one.Because LED crystal particle 110 is according to a-c cycle subregion driven for emitting lights, and each wavelength conversion layer only coats respectively on the corresponding luminescence unit, therefore can effectively reduce each wavelength conversion layer and produce the light loss that unnecessary secondary conversion is caused.Wherein, described a-c cycle can be 60Hz or its multiple frequency.
In order to improve the radiating effect of element, the growth substrate 111 of the LED crystal particle 110 of Fig. 2 can be removed, and a support substrate 121 is engaged layer with an on-monocrystalline 123 be engaged to first contact layer 112, form embodiment as shown in Figure 4, and, when being light tight, can engaging with on-monocrystalline in first contact layer 112 and form a reflection horizon 122 between the layer 123 and absorb to avoid light to be supported substrate 121 as support substrate 121.
Fig. 5 discloses a light-emitting component 501 according to the invention, comprise one and have 4 LED crystal particle 510 of taking advantage of 4 light emitting arrays, and a supply unit is electrically connected to the two ends of LED crystal particle.LED crystal particle 510 comprises luminescence unit R1, luminescence unit R2, luminescence unit R3 and luminescence unit R4 and is formed on the growth substrate 511 insulated from each otherly, and be electrically insulated with this growth substrate, wherein luminescence unit R1～R4 respectively is 1 * 4 light emitting array of series connection, one circuit layer 518 electrically connects luminescence unit R1～R4 with a type of attachment, wavelength conversion layer 517-1,517-2,517-3, and 517-4 respectively correspondence be formed at luminescence unit R1, R2, R3, and R4 on.Wherein, the type of attachment of circuit layer 518 makes luminescence unit R1 and R3 for being connected in series, luminescence unit R2 and R4 are for being connected in series, the luminescence unit R1 and the R3 of series connection then are connected for reverse parallel connection (anti-parallel) with the luminescence unit R2 and the R4 of series connection, and are connected to the two ends of supply unit 520 jointly.Supply unit 520 can be an AC system (Alternating Current; AC) power supply.Because LED crystal particle 510 is according to a-c cycle subregion driven for emitting lights, and each wavelength conversion layer only coats respectively on the corresponding luminescence unit, therefore can effectively reduce each wavelength conversion layer and produce the light loss that unnecessary secondary conversion is caused.
The LED crystal particle of the various embodiments described above has an area less than 5mm
2Or less than 2mm
2Have on the support plate of circuit conveniently to be packaged in the packaging body or to be formed at one, be preferably and have the size that meets commercial standard, for example 12mil * 12mil, 25mil * 25mil, 45mil * 45mil or a 55mil * 55mil etc.
Fig. 6 discloses according to a display device of the present invention.Display device 600 has a plurality of pixels, comprise that a backlight module 601, one first polarisation module 602 are formed on the backlight module 601, a film crystal tube module 603 is formed on the first polarisation module 602, a Liquid Crystal Module 604 is formed on the film crystal tube module 603, one second polarisation module 605 is formed on the Liquid Crystal Module 604, a colorized optical filtering module 606 is formed on the second polarisation module 605 and a control module 607, comprise the above-mentioned module of a control circuit in order to control display device 600.Wherein, backlight module 601 also comprises a light-emitting component 610 in order to provide display device 600 required light source.Light-emitting component 610 can be various light source or is same as the LED crystal particle 110 of the before mentioned embodiment of the present invention and the material distribution of the wavelength conversion layer 117-1～117-4 shown in each embodiment four of table one.Embodiment four for table one is an example, promptly wavelength conversion layer 117-1,117-2,117-3, and the material of 117-4 comprise redness, green, blueness, green emitting phosphor respectively.In the forward semiperiod of AC power periodic wave, luminescence unit R1 and R3 are driven the 410～430nm black light that sends, respectively the wavelength conversion layer 117-1 through having red fluorescence powder and have the wavelength conversion layer 117-3 conversion of blue colour fluorescent powder after send wavelength coverage approximately between the ruddiness of 600～650nm and wavelength coverage approximately between the blue light of 440～480nm; In the negative sense semiperiod of AC power periodic wave, luminescence unit R2 and R4 are driven sends wavelength coverage approximately between the black light of 410～430nm, sends wavelength coverage after wavelength conversion layer 117-2 through having green emitting phosphor and the 117-4 conversion approximately between the green glow of 500～560nm.Liquid Crystal Module 603 comprises described a plurality of pixels that a plurality of liquid crystal blocks correspond respectively to display device 600.Colorized optical filtering module 606 comprise a plurality of red optical filtering block R in order to the wavelength-filtered scope between the light beyond the red light of 600～650nm, a plurality of blue optical filtering block B in order to light and a plurality of printing opacity block C of wavelength-filtered scope beyond the blue ray of 440～480nm, in fact for visible transparent, that is do not have filtering functions.Lighted alternately according to the clock pulse 60Hz of AC power because that backlight sends is red, blue, reach green glow, be that ruddiness and blue light are subjected to driven for emitting lights during the forward semiperiod of AC power periodic wave, and send ruddiness and blue light respectively at the redness optical filtering block R and the blue optical filtering block B of colorized optical filtering module 606; Green glow is subjected to drive luminous separately during the negative forward semiperiod of AC power periodic wave, therefore can must not arrange green optical filtering block on colorized optical filtering module 606 in the direct bright dipping of the printing opacity block C of colorized optical filtering module 606.Wherein, printing opacity block C comprises the material with printing opacity or is a space.Red optical filtering block R, blue optical filtering block B and printing opacity block C have identical in fact width, area and/or volume.Then belong to the prior art in this field about display device 600 other parts that do not describe in detail or do not address, do not give unnecessary details at this.
Above-mentioned all embodiment, wherein, the material of described first contact layer, first bond course, second bond course, second contact layer and active layer comprises III-V group compound Al
xIn
yGa
(1-x-y)N, wherein, 0≤p, q≤1; P, q, x, y are positive number; (p+q)≤1; (x+y)≤1.Described first doping is a n type doping, for example Si, or p type doping, for example Mg or Zn; Described second doping is the doping that has with the different conductivity type of first doping.Described electric current dispersion layer comprises transparent metal oxide, for example is tin indium oxide (ITO), metal or metal alloy.Described growth substrate for example is to comprise that at least a transparent material or insulation material are selected from the group that sapphire, silit, gallium nitride and aluminium nitride are formed.Described support substrate for example is to comprise that transparent material is selected from the group that gallium phosphide, sapphire, silit, gallium nitride and aluminium nitride are formed; Or for example be to comprise that Heat Conduction Material is selected from diamond, class is bored the group that metal materials such as carbon (DLC), zinc paste, gold, silver, aluminium are formed.Described on-monocrystalline engages layer and comprises at least a material and be selected from the group that metal oxide, nonmetal oxide, high molecular polymer, metal or metal alloy are formed.
Cited each embodiment of the present invention in order to explanation the present invention, is not in order to limit the scope of the invention only.Anyone is to any apparent and easy to know modification that the present invention did or change neither disengaging spirit of the present invention and scope.
Claims (9)
1. a display device has a plurality of pixels, and this display device comprises:
Backlight module, comprise light-emitting component in order to provide this display device required light source, wherein, this light-emitting component comprises first luminescence unit and sends second light and the circuit linkage unit that first light, second luminescence unit with first spectrum send second spectrum that is different from first spectrum and electrically connect this first luminescence unit and this second luminescence unit with type of attachment, make this display device when power drives shows, this first luminescence unit and this second luminescence unit are lighted alternately according to predetermined clock pulse;
Liquid Crystal Module comprises these a plurality of pixels that a plurality of liquid crystal blocks correspond respectively to this display device;
The colorized optical filtering module, comprise these a plurality of pixels that a plurality of optical filtering blocks correspond respectively to this display device, respectively these a plurality of optical filtering blocks comprise one first optical filtering block at least in order to the light of filtration except first light with first spectrum, and the printing opacity block, do not have filtering functions; And
Control module comprises control circuit in order to control this backlight module and this Liquid Crystal Module.
2. display device as claimed in claim 1, wherein this light-emitting component also comprises the 3rd luminescence unit and sends the 3rd light with the 3rd spectrum, and wherein, this first spectrum is different from the 3rd spectrum.
3. display device as claimed in claim 1, wherein this light-emitting component comprises LED crystal particle, wherein this LED crystal particle comprises substrate, and this first luminescence unit, this second luminescence unit, and the 3rd luminescence unit be formed at simultaneously on this substrate.
4. display device as claimed in claim 3, wherein the area of this LED crystal particle is less than 5mm
2
5. display device as claimed in claim 2, wherein this first spectrum, this second spectrum, and the 3rd spectrum comprise wavelength coverage and be selected from 440～480nm, 500～560nm, 570～595nm, and group that 600～650nm formed.
6. display device as claimed in claim 1, wherein this type of attachment comprises reverse parallel connection.
7. display device as claimed in claim 1, wherein this power supply is the AC system power supply.
8. display device as claimed in claim 2, wherein this type of attachment makes this second luminescence unit and the 3rd luminescence unit for being connected in series, and makes that this first luminescence unit and this second luminescence unit are reverse parallel connection.
9. display device as claimed in claim 1, wherein respectively these a plurality of optical filtering blocks and respectively this printing opacity block have identical in fact width, area and/or volume.
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| CN2009101289855A CN101840101B (en) | 2009-03-20 | 2009-03-20 | Display device with array type light-emitting component |
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| CN2009101289855A CN101840101B (en) | 2009-03-20 | 2009-03-20 | Display device with array type light-emitting component |
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| CN101840101A true CN101840101A (en) | 2010-09-22 |
| CN101840101B CN101840101B (en) | 2012-02-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015117273A1 (en) * | 2014-02-08 | 2015-08-13 | Cree Huizhou Solid State Lighting Company Limited | Smart pixel surface mount device package |
| CN105378517A (en) * | 2013-06-06 | 2016-03-02 | 富士胶片株式会社 | Optical sheet member and image display device using same |
| CN105408810A (en) * | 2013-07-22 | 2016-03-16 | 富士胶片株式会社 | Liquid-crystal display device |
| CN107919092A (en) * | 2016-10-10 | 2018-04-17 | 群创光电股份有限公司 | Display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW528169U (en) * | 2000-05-04 | 2003-04-11 | Koninkl Philips Electronics Nv | Assembly of a display device and an illumination system |
| CN2809676Y (en) * | 2005-05-31 | 2006-08-23 | 优佰利股份有限公司 | Light source module and liquid crystal panel assembly |
| KR20070079649A (en) * | 2006-02-03 | 2007-08-08 | 삼성전자주식회사 | Backlight assembly and display device having the same |
| KR101198374B1 (en) * | 2006-02-23 | 2012-11-07 | 삼성디스플레이 주식회사 | Light emitting diode substrate and manufacturing method thereof and liquid crystal display using the same |
| JP4607846B2 (en) * | 2006-10-19 | 2011-01-05 | ソニー株式会社 | Light source device, light source driving device, light emission amount control device, and liquid crystal display device |
| JP2009047884A (en) * | 2007-08-20 | 2009-03-05 | Seiko Epson Corp | Electrooptical device and electronic apparatus |
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| CN105378517A (en) * | 2013-06-06 | 2016-03-02 | 富士胶片株式会社 | Optical sheet member and image display device using same |
| US10281769B2 (en) | 2013-06-06 | 2019-05-07 | Fujifilm Corporation | Optical sheet member and image display device using same |
| US10663800B2 (en) | 2013-06-06 | 2020-05-26 | Fujifilm Corporation | Optical sheet member and image display device using same |
| CN105408810A (en) * | 2013-07-22 | 2016-03-16 | 富士胶片株式会社 | Liquid-crystal display device |
| CN105408810B (en) * | 2013-07-22 | 2019-10-29 | 富士胶片株式会社 | Liquid crystal display device |
| WO2015117273A1 (en) * | 2014-02-08 | 2015-08-13 | Cree Huizhou Solid State Lighting Company Limited | Smart pixel surface mount device package |
| US10833054B2 (en) | 2014-02-08 | 2020-11-10 | Cree Huizhou Solid State Lighting Company Limited | Smart pixel surface mount device package |
| CN107919092A (en) * | 2016-10-10 | 2018-04-17 | 群创光电股份有限公司 | Display device |
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| CN101840101B (en) | 2012-02-29 |
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